In this activity: Students conduct a reaction with citric acid and baking soda in a universal indicator solution. The resulting chemical reaction produces a gas, causes a color change with an ...

When pure water is dropped into a solution of universal indicator, the indicator stays green. This indicates a pH value of 7 and tells us that water is neither alkaline or acid, but neutral.

Pour desired household chemicals into separate 50 mL beakers. Add a few drops of universal indicator OR about 25 mL of red cabbage indicator and mix. Compare colors to standard solutions in lighted ...